Master Studies by Joe Morello is a penultimate book in the development of key drum knowledge.  The book develops drumstick control, and correct holding technique.  The Master Studies focus on accents and their various placement, buzz or press roll exercises, single and double stroke patterns, flam and the development of stamina and endurance.  From West London Drum Tutor, Drum teacher in Harrow, London http://paltip.com/westlondonenglish/!525j